Device for cooling systems of large-capacity electroslag remelting furnaces

ABSTRACT

A device for cooling systems of large-capacity electroslag remelting furnaces in which furnace columns serve as conduits for a coolant fed to an electrode holder and a cross-arm whereas for supplying the coolant to a mold and a base plate use is made of telescopic pipelines.

United States Paieni Medovar et al.

DEVICE FOR COOLING SYSTEMS OF LARGE-CAPACITY ELECTROSLAG REMELTING FURNACES Inventors: Boris Izrailevich Medovar, bulvar Lesi Ukrainki, 2, kv. 8; Jury Fedorovich Alferov, bulvarfLepse, 29, kv. 64; Grigory Bentsionovich Schupak, ultisa Chudnovskogo, 7, kv. 61; Valery Evgenievich Lanevsky, ulitsa V, K'uchera, 2a, kv. 8; Vitaly Grigorievich Dykan, ulitsa Ushinskogo, 8, kv. 29; Mikhail Elevich Berezovsky, ulitsa Lomonosova, 21/14, kv. 54; Vitaly Mikhailovich Baglai, ulitsa Semashko, l0, kv. 54/3; Lev Andreevich Shuruev, ulitsa Gegarina, 10/2, kv. 7; July Georgievicli Emelyanenko, ulitsa Darvina, 5, kv. 5,. all of Kiev; Kim Moiseevich Khasin, prospect K. Marxa, 35, kv. 17, Novosibirsk; Vladimir Ivanovich Lugovsky, ulitsa Pamirskaya, 48, kv. 70,

Novosibirsk; Valery Vasilievich Salmin, ulitsa Zorge, 95, kv. 69, Novosibirsk; Vilen Fedorovich Marjuschenko, ulitsa Televisionaya, ll, kv. 7, Novosibirsk; Fedor Fedorovich Shaburov, ulitsa Rimskogo Korsakova, 4a, kv. 64, Novosibirsk; Georgy Vasilievich Tamozhnikov, ulitsa Vertkovskaya,

[ Oct. 16, 1973 14, kv. 4, Novosibirsk; Vlktor Andreevlch Popov, ulitsa Andreevskaya, 11, kv. 2, Kiev; Gennady Mikhailovich Semin-Vadov, ulitsa Butyrskaya, 86B, kv. 10, Moscow, all of USSR.

[22] Filed: Sept. 27, 1972 {21] Appl. No.: 292,834

[52] US. Cl. [51] Int. Cl. .e [5 8] Field of Search [56] References Cited UNITED STATES PATENTS 3,202,751 8/1965 Wooding 3,414,661 l2/l968 Reed Primary Examiner-Roy N. Envall, Jr.

Attorney-John C. Holman et a1.

[5 7] ABSTRACT A device for cooling systems of large-capacity electroslag remelting furnaces in which furnace columns serve as conduits for a coolant fed to an electrode holder and a cross-arm whereas for supplying the coolant to a mold and a base plate use is made of telescopic pipelines.

3 Claims, 3 Drawing Figures Patented Oct. 16, 1973 Patented Get. 16, 1973 2 Sheets-Sham 1:

DEVICE eon COOLING SYSTEMS F LARGE-CAPACITY ELECTROSLAG REMELTING FURNACES BACKGROUND OF THE INVENTION The present invention relates to devices for cooling systems of large-capacity electroslag remelting furnaces.

Known in the prior art are devices for cooling systems of electroslag remelting furnaces comprising pipelines to connect a coolant source with the cavity in a base plate mounted on a bogie and with the cavities of an electrode holder and a mold fastened to hollow furnace columns with the aid of cross-arms. Movable members of the furnace as well as the mould and the base plate are interconnected by pipelines which are hoses of rubberized cotton fabric. Such pipelines are too bulky, take too much space, and are also unreliable in operation and burn through when slag splashes out of the mold.

Besides, current leads, cables, columns and other movable and stationary members of the furnace subjected to the influence of thermal radiation and convective heating by large surfaces of a slag bath, all of them require cooling.

SUMMARY OF THE INVENTION The basic object of the invention is to provide an efficient device for cooling systems of large-capacity electroslag remelting furnaces.

Another object of the invention is to improve reliability of pipelines connecting movable members of a furnace, namely a mold and a base plate.

Still another object of the invention is to improve airtightness of telescopic joints of the pipelines.

The above objects are attained by developing a device'for cooling systems of large-capacity electroslag remelting furnaces comprising pipelines to communicate a coolant source with a cavity in a base plate mounted on a bogie and with coolant cavities provided in an electrode holder and a mold fastened to hollow columns of the furnace with the aid of crossarms wherein device, according to the invention, the hollow columns serve as conduits for the coolant and are in communication with the'cavities in the cross-arm and the electrode holder, while the pipelines connecting the cavities in the mold and the base plate with the coolant source are made of tubular members connected with the aid of telescopic joints.

The above construction of the device fitted with the pipelines which are reliable in operation prolongs the life of the setup.

Joints in the tubular members are advisable to have packing made of elastic material, such as rubber, whereas the end portions of the telescopic pipelines shouldbe made in the form of sealed ball hinged sleeves.

BRIEF DESCRIPTION OF THE DRAWINGS A more complete understanding of the nature of the invention will be obtained from the following description of an exemplary embodiment taken in conjunction with the accompanying drawings, in which:

FIG. I is an isometric view of the device according to the invention with partial cutouts;

FIG. 2 shows a longitudinal sectional view of a telescopic pipeline in extended position;

FIG. 3 depicts the same telescopic pipeline in col- I lapsed position.

DETAILED DESCRIPTION OF THE INVENTION A device for cooling systems of large-capacity electroslag remelting furnaces comprises a telescopic pipeline 1 (FIG!) connected with a coolant source (not shown in the drawing) and intended for feeding the coolant (water) to a cavity of a base plate 2 mounted on a bogie 3, and a telescopic pipeline 4 for draining off the coolant from the base plate 2. To supply the coolant to a mold 5 provision is made for a telescopic pipeline 6 and to discharge it for a telescopic pipeline .7. One of hollow columns 8 of the furnace serves as a rising pipe while the remaining columns 9 are fitted with sprinkling devices It) and connecting pipes I1 for draining water. The water is fed to an electrode holder 12 along a connecting pipe 13 and a connecting pipe 15 serves for draining water from the holder to an upper cross-arm 14.

Each telescopic pipeline I, 4, 6 and 7 is made up of tubular members l6, l7 and 18 (FIGS. 2 and 3) provided with packings 19 made from elastic material, such as rubber, and set up at the joints between two members. The end portions of the telescopic pipelines 7 are made in the form of sealed ball hinged sleeves 20. Each tubular member 16 has a flange 2?. connected with the aid of bolts 22 with a flange 23 of a connecting pipe 24 through which the other tubular member 17 slides and is connected by means of a telescopic joint with the first member 16 by an annular retaining member 25.

A furnace cooling device functions as follows. One of columns 8 of the furnace acts as a supply tank or a header from which water for cooling an electrode holder 12 flows via a connecting pipe 13 being then discharged to an upper cross-arm I4 along a connecting pipe 15. Next the water passes to sprinking devices W of columns 9 flowing off the inner surface of their walls. From the columns 9 the water is drained via connecting pipes 11 arranged at the column base. Telescopic pipelines 6 and 7 connected to a mold 5 travel vertically by extending or collapsing depending on the direction of travel of the mold, whereas telescopic pipelines l and 4 connected to a base plate 2 travel in the horizontal direction by extending or collapsing as the base plate is being displaced.

Tests have shown that the telescopic pipelines have functioned reliably and a sufficiently effective cooling of the furnace has been attained.

We claim:

I. A device for cooling systems of large capacity electroslag remelting furnaces comprising an upper crossarm; an electrode holder connected thereto; columns supporting the upper cross-arm, said columns having cavities therein which serve as conduits for a coolant supplied from a source, said upper cross-arm having cavities communicating with those of said columns and said electrode holder having cavities communicating with those of said upper cross-arm to which it is fastened', a mold having walls provided with cavities to accommodate the coolant; first pipelines made up of tubular members connected with the aid of telescopic joints and adapted to communicate the mold coolant cavity with the coolant source; .a base plate for said mold provided with a cavity for the coolant; and second pipelines made up of tubular members coupled with aid of telescopic joints and connecting the coolant cavity of said base plate with the coolant source.

2. The device of claim 1 in which said tubular members are fitted with packings made from elastic material such as rubber, and placed at the joints between each means of an annular retaining member. 

1. A device for cooling systems of large capacity electroslag remelting furnaces comprising an upper cross-arm; an electrode holder connected thereto; columns supporting the upper cross-arm, said columns having cavities therein which serve as conduits for a coolant supplied from a source, said upper cross-arm having cavities communicating with those of said columns and said electrode holder having cavities communicating with those of said upper cross-arm to which it is fastened; a mold having walls provided with cavities to accommodate the coolant; first pipelines made up of tubular members connected with the aid of telescopic joints and adapted to communicate the mold coolant cavity with the coolant source; a base plate for said mold provided with a cavity for the coolant; and second pipelines made up of tubular members coupled with aid of telescopic joints and connecting the coolant cavity of said base plate with the coolant source.
 2. The device of claim 1 in which said tubular members are fitted with packings made from elastic material such as rubber, and placed at the joints between each of the members, the end portions of said telescopic pipelines being made in the form of sealed ball hinged sleeves.
 3. The device of claim 2 in which each of said tubular member is provided with a flange bolted to a flange of a connecting pipe through which the other tubular member slides to form a telescopic joint, said other tubular member is retained in said connecting pipe by means of an annular retaining member. 